I've come into the possession of a quaint little single-board Z80 using a pretty standard chipset (Z84C Serial interface chip, PIO, CPU, CTC) and some basic RAM (Motorola 256KByte chip, M5M5256DP-70LL), and I'd like to power this little board, seeing as it has some cool functions (Direct interface to a board with an alphanumeric VFD and 4x4 keypad and a Bell 212A modem) However, this is where the problem is. The board really has no indication on it's pin header (12 pins) where it hides the power and ground. I tried using my multimeter to continuity check power pins on the board, but is this the method I'm stuck with?